| First Author (year) | Patient indication | Surgical indication | Type of block | Outcome | Complication |
| Our presented patient | SJMS with grossly abnormal lung function test | Left lower inner quadrant lumpectomy | PVB and Pecs I block | Excellent surgical condition. Discharged on the same day. | - |
| Moon EJ (2017) [5] | Refusal of GA | Left breast mass for Breast-Conserving Surgery with Axillary Clearance | Pecs I and II (in combination with sedation) | Analgesic effect lasted 8 hours No post-operative nausea and vomiting (PONV) | - |
| Versyck B. (2017) [6] | 140 patients with breast cancer stage 1 - 3 | Mastectomy or lumpectomy with sentinel node or axillary node dissection | Pecs II block or placebo block with saline | Pecs group had significantly less pain during stay in recovery area, required significantly less postoperative opioids | - |
| Hong B (2017) [7] | 27-weeks parturient, with recurrent breast cancer, refused GA | Wide excision of breast mass 3 - 4 cm below the clavicle | Pecs II block and Pecto-intercostal fascial block | No intraoperative analgesics. Postoperative Visual Analogue Scale (VAS) score 1 but did not require further analgesics. | - |
| Abdallah FW (2017) [8] | Cohort study of 225 patients with breast cancer | Ambulatory breast cancer surgery | 3 study groups of (75 per group): pectoralis, serratus block and conventional opioid-based analgesia | Pec and SPB associated with, reduced intraoperative fentanyl requirements, expedited recovery room discharge, reduced post-operative opioid use and PONV compared to control | - |
| Kim H (2017) [9] | Refusal of GA | Excision of breast giant fibroadenoma | Pecs I, Pecs II and internal intercostal plane block | No intraoperative opioid needed. No postoperative pain | - |
| Takahashi H (2017) [10] | 72 years old, breast cancer at 1 o’clock position of the right breast | Modified radical mastectomy with sentinel node dissection | Complete ante-thoracic (medial, inferior, lateral) block, with sedation using propofol and remifentanil 0.1 mcg/kg/min | No postoperative analgesics. | - |
| Patel SY (2017) [11] | 65 year old with ductal carcinoma-in-situ and mammary dysplasia, history of severe PONV | Unilateral mastectomy and TRAM flap reconstruction without axillary lymph node dissection | Pecs I and II, unilateral abdominal TAP block done before GA | NRS 4 - 5/10 on the side not blocked mild to moderate nausea 0 - 48 hrs RA lasted 24 hrs | - |